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#1
11th February 2011, 08:45 PM
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The Crap won't charge.
Just changed my fuel pump, (witch by the way wasn't fried, alltho the fuel gauge sender is). AND when i was taking the car for at test run i saw that my alternator light was glowing slightly. Then 4min in to the test run i started getting all sorts of warnings from the MID. First battery fault, then i lost my ABS and ESP. Then my headlights went out and i started to understand what was going on, and tried to rush back "home" to my workshop. But I didn't come that far since the car suddenly died. I got the car towed back to the shop and hocked up the charger and let it charge over night and until 30min ago.
BUT, the car still won't charge. And i didn't get any indications that something was wrong with the charing system before it stopped due to loss of fuel last weekend. Is it possible the ECM goes in retard mode or something? Or this might bee a common fault? Realy starting to get sick of shait coming in nice big packages when something happens with this car. 
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#2
12th February 2011, 09:05 AM
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Nightmare i know how you feel i've had mine die on me.
Have a look under the car just behind the front right wheel, there is a box there with a big wire running from the boot, it then splits to the starter and alt. You might have a cover over the plastic box. Check here for green powdery corrosion. There is more info on this on here somewhere.
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#3
12th February 2011, 10:14 AM
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If the battery won't take a charge then the battery will need replacing.
If the car won't crank then there is a possibility that the corrosion that dezzy mentions is causing poor contacts at either the positive supply to the starter motor of the earth strap from chassis to engine block (as I found on mine). If the car starts but won't charge from the alternator then the block where the stater motor cable meets the battery cable also has the wire from the alternator. Strip, wire brush and resemble with plenty of petroleum jelly and see if that helps. If non work then maybe a new alternator. 
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. 
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#4
12th February 2011, 01:06 PM
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In addition to Mike (conan's) suggestion, I would use some ACF 50 corrosion block grease, which though pricey, is really good stuff.
I used it for 5 years on my jetski (when I was fit & uninjured enough to use it) used solely in a sal****er environment, and never suffered with any corrosion problems. Also- I'd recommend their ACF50 spray (in hand pump - £30/litre) for corrosion resistance in wiring connectors.. I still use these on my Harley, 4x4 & 8 & have thusfar had no problems...
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I Love the smell of petrol in the morning! Other vehicles 1968 Rover P5B Coupe (Modified & V-Quick, but I have to sell this now  ... Boo Hoo!)'92 Mitsubishi Pajero V6 (Petrol) Super Exceed (Gone now) '06 Harley Davidson Night Train Oh Yes....... The '98 PF S8!
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#5
12th February 2011, 01:08 PM
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The obscenity check over policed me on ...... SALTW-A-T-E-R!!
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I Love the smell of petrol in the morning! Other vehicles 1968 Rover P5B Coupe (Modified & V-Quick, but I have to sell this now ... Boo Hoo!)'92 Mitsubishi Pajero V6 (Petrol) Super Exceed (Gone now) '06 Harley Davidson Night Train Oh Yes....... The '98 PF S8!
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#7
12th February 2011, 03:22 PM
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Nope and also peniston is out too (p-e-n-i-s-ton) lol
 *shock it let that one through!
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Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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